From 18S ribosomal sequence data to evolution of morphology among the fungi
- 31 December 1995
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 73 (S1), 677-683
- https://doi.org/10.1139/b95-310
Abstract
From ribosomal DNA sequence data we can estimate ascomycete relationships, the time of divergence of major ascomycete lineages, and the history of morphological evolutionary change. Groups long accepted by mycologists such as the filamentous ascomycetes with fruiting bodies, (the plectomycetes and pyrenomycetes) are supported by 18S rDNA sequence data. After generating a phylogenetic tree showing relationships, the geological time of divergence of major fungal lineages may be estimated, inferring elapsed time using the calibrated percent substitutions between sequences. Determining the pathway of evolution of morphological characters is more difficult than inferring the relationships among these taxa. To establish the history of morphological evolution, we need accurate trees receiving strong support from our data set. We also need taxa with the intermediate characters to reveal the sequence of events in morphological evolution. Soon, however, we may be able to take a more direct approach to evolution of morphological characters, sequencing the genes that code for the character. Key words: fungus evolution, ascomycete phylogeny.Keywords
This publication has 21 references indexed in Scilit:
- The polyphyletic origins of ophiostomatoid fungiMycological Research, 1994
- Dating the evolutionary radiations of the true fungiCanadian Journal of Botany, 1993
- Genetic control of fungal differentiation: The three sporulation pathways of Neurospora crassaBioEssays, 1993
- Origin and diversification of endomycorrhizal fungi and coincidence with vascular land plantsNature, 1993
- 18S rDNA sequences and the holometabolous insectsMolecular Phylogenetics and Evolution, 1992
- A method for the analysis of comparative dataJournal of Theoretical Biology, 1992
- Convergence in ascospore discharge mechanism among pyrenomycete fungi based on 18S ribosomal RNA gene sequenceMolecular Phylogenetics and Evolution, 1992
- Fungal Molecular SystematicsAnnual Review of Ecology and Systematics, 1991
- Genetic regulation of development in Aspergillus nidulansTrends in Genetics, 1988
- Cases in which Parsimony or Compatibility Methods Will be Positively MisleadingSystematic Zoology, 1978